On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table.

They are seeking good fortune in their hunt for an elusive entity: element 119. The periodic table looks complete, but it isn’t. The race is on to discover the table’s next row of elements ...

1. Periodic Table as Arranged by Mendelejeff attention to the fact that “the eighth element, starting from a given one, is a kind of repetition of the first, like the eighth note of an octave in ...

Starbase provides STEM programming to underrepresented and underserved youth of Kansas. The program's funding is on hold because Congress has yet to approve its fiscal year 2025 budget.

The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

What are Endangered & Critical Elements? Of the 118 elements that make up everything—from the compounds in a chemist’s arsenal to consumer products on the shelf—44 will face supply limitations in the ...

Denzil was joined by fellow child scientist Sean the Science Kid, who taught Hudson about the periodic table. They also ...

We present a general method for solving the modified Helmholtz equation without shape approximation for an arbitrary periodic charge distribution, whose solution is known as the Yukawa potential or ...

How do we calculate mass and atomic numbers? VideoHow do we calculate mass and atomic numbers? This video is an interactive lesson in calculating an atom's mass and atomic number.

One of the more complex elements of performing a technical audit on any enterprise website with a large number of URLs is crawling. There a number of ways you can tackle enterprise website ...